10 Calculator Websites Dominating SEO Rankings

Looking for ways to improve your own website and get more traffic?

I’ve collected 10 of the most interesting, and successful calculator websites to showcase that simple tools can be a valuable driver of organic traffic.

You can replicate the strategy and create similar calculator in your niche.

  1. Money Saving Expert: Personal finance calculators
  2. Omni Calculator: Repository of calculators
  3. Inch Calculator: Repository of construction calculators
  4. Mortgage Calculator: Mortgage calculators
  5. TDEE Calculator: Total daily energy expenditure calculator
  6. Fat Calc: Body fat and weight management calculators
  7. Tire Size: Tire sizing calculator
  8. Air Fryer Calculator: Oven to air fryer converter
  9. Snow Day Calculator: Snow day prediction calculator
  10. A Bra That Fits: Bra calculator

To showcase the traffic metrics I am using Ahrefs tool.

1. MoneySavingExpert.com

MSE is known for its consumer advocacy and practical advice in the personal finance space.

About

MoneySavingExpert.com (MSE) is a UK-based personal finance website founded by Martin Lewis in 2003. It’s designed to help consumers save money through various resources, including guides, tools, calculators, and forums. The site covers different aspects of personal finance, such as credit cards, insurance, mortgages, energy bills, and travel.

One of their main organic traffic channels is the page dedicated to various calculators. Their tax and mortgage calculator pages drive nearly 600k organic traffic alone.

Here is what Ahrefs has to say about their mortgage calculator page.

Ahrefs Traffic

An interesting fact is that it was created in 2019. It’s surprising that they did not do it earlier, considering the website’s age.

Backlinks

As you can imagine, the calculator page attracts high-quality backlinks. Ahrefs reports 404 unique domains pointing to its mortgage calculator page.

2. OmniCalculator.com

Omni Calculator is an extensive library of over 3,700 calculators across various fields.

About

OmniCalculator is designed to help users solve everyday and complex calculations, covering topics such as math, science, health, finance, construction, and more. Each calculator is tailored to provide precise answers and includes detailed explanations to help users understand the concepts behind the calculations.

The project started in 2016, and over the years, the site has grown to over 7m organic traffic, which is insane considering how simple its strategy is. Calculator pages follow a similar pattern of introducing the problem, explaining the formula, and explaining how to calculate the given problem.

Ahrefs Traffic

Did you notice anything weird in this chart? HCU didn’t touch the site at all; it has gotten even bigger.

Backlinks

Of course, OmniCalculator attracted a huge number of links, nearly 29,000. Some huge domains like Healthline shared their calculators in their content.

3. InchCalculator.com

Like Omnicalculator, Inch Calculator offers a vast repository of specialized calculators.

About

At first glance, it looks pretty similar to OmniCalculator, and you are right it is. The difference is that Inch Calculator is focused primarily on construction, home improvement, and DIY projects.

Before you hate their basic design, check the traffic chart first. You are only allowed to hate if you get more than that.

What I find interesting about this website is that they created mobile app versions of their calculators for construction, such as concrete, block, landscape calculators, etc. This is such a smart move. Their apps are top-rated and have nearly 17k ratings on the iOS store. I can imagine this convenience for contractors. They must be killing it with ad revenue.

Ahrefs Traffic

This site gets an incredible 4.5m organic traffic.

Backlinks

According to Ahrefs, InchCalculator has landed nearly 12k backlinks with its calculators, including huge domains like Gizmodo.com or Lifehacker.com.

With Creative Widgets you can create any calculator from the above websites tailored to your own niche, whether its every day life calculators, or investment calculators.

Now that we have covered large publishing websites, let’s look at more interesting indie calculator websites.

4. MortgageCalculator.org

MortgageCalculator is a web dedicated to different mortgage calculators.

About

MortgageCalculator.org was founded in 2007 and features a straightforward, single-page mortgage calculator that allows users to estimate their monthly mortgage payments based on factors like loan amount, interest rate, loan term, and down payment.

In addition to the primary mortgage calculator, the site offers a range of other calculators and tools that cover different mortgage-related topics, such as affordability, amortization, and refinancing. These tools help users understand how changes in interest rates, loan terms, or extra payments can impact their overall mortgage costs.

My favorite thing about this website is its monetization strategy. Underneath the calculator, you will see affiliate links to different mortgage providers.

Ahrefs Traffic

The traffic has fluctuated recently and is reported to bring around 360k organic visitors. However, the site peaked around 2020 with 3m organic visitors. This number is probably much higher, as Ahrefs always underestimates the traffic.

Backlinks

Over the years, MortgageCalculator acquired over 12k backlinks, including NY Times.

Here is simple mortgage calculator example that you can create with Creative Widgets for your own real estate website.

5. TDEECalculator.net

TDEECalculator.net is a specialized website that calculates the total daily energy expenditure (TDEE).

About

TDEECalculator.net was created in 2015 and is widely used today by fitness enthusiasts and those interested in effectively managing their diet and health. Its single-page, simple design and accurate results attract over a million visitors, making it a go-to resource for anyone looking to optimize their dietary habits.

This website is probably one of my favorite examples of how far a single-page calculator can go. It has a single page with a calculator and one for results. Both of these pages are monetized with affiliate links and some ads.

Ahrefs Traffic

Ahrefs shows steady growth of this single-page calculator over the years and estimates that it currently has around 1m organic visitors.

This is unbelievable if you consider it in the context of a website you can create in one afternoon.

Backlinks

Since 2015, TDEECalculator has received 2,000 backlinks.

You can make calculator like this with Creative Widgets in about 20 minutes if you know the right formula.

I actually made one for you to see:

Do you think this was a lucky shot that this calculator took off? Well, the next one proves that you can do it, too.

6. FatCalc.com

A small library of calculators related to body fat and weight management.

About

Created in 2019, FatCalc.com is a niche website that provides tools for calculating body fat percentage and other related health metrics.

It is designed to be simple and accessible for those who want quick results without extensive input.

This calculator website is super niche, with only 11 pages. But even that doesn’t stop it from getting hundreds of thousands of traffic.

Despite its low-effort design and limited number of pages, the site effectively serves a specific purpose, making it useful for anyone looking to understand and monitor their body fat levels.

FatCalc is accepted on the Raptive network, so they do very well with ads.

Ahrefs Traffic

According to Ahrefs, FatCalc currently has around 150k organic traffic. The traffic chart looks like a roller coaster, but you will see a growing trajectory if you smooth it.

Another aspect of spikes and dips is seasonality; those spikes start in January when we are all motivated to lose weight.

Backlinks

FatCalc.com has only acquired 381 links since its start in 2019. But you don’t need much to rank when the NYTimes or Telegraph links to you.

7. TireSize.com

TireSize helps vehicle owners to select the correct tire size using various tools.

About

There is not much to say here. TireSize.com is a specialized website for selecting the correct tire size. The site offers various tools and charts, including calculators and converters.

Its tire size calculator is comprehensive and drives 1/3 of the total traffic.

TireSize is monetized primarily via affiliate links to tire retailers. Considering the price of a single tire, sales commissions must be pretty good.

Ahrefs Traffic

The total website traffic is estimated to be around 350k organic visitors, but since we are talking about calculators, the chart below shows you only the traffic to their calculator page.

As you can see, it accounts for about 100k visitors.

Backlinks

The calculator page has 488 backlinks. Most links are from reputable niche magazines, such as RealTruck.com or TireBuyer.com.

I hope you love outliers just as much as I do because the following website calculators are crushing it, and I bet you never even considered such niches.

8. AirFryerCalculator.com

Single-page calculator converting oven to air fryer temperature.

About

This is another example of how far you can get with a simple page calculator. AirFryerCalculator.com is a niche website that helps users convert traditional oven cooking times and temperatures to air fryer settings.

The site provides a super simple calculator that allows users to input the oven temperature and cooking time specified in a recipe, and it then calculates the corresponding air fryer settings.

The website is monetized with Ezoic and includes a link to an Amazon air fryer magnetic sheet for your fridge.

This website is a definition of passive income if you ask me.

Ahrefs Traffic

Compared to other websites I mentioned earlier, AirFryerCalculator doesn’t get anywhere close.

But given that it’s a single page with three input fields, achieving 18k organic traffic (probably more than that) for the page you made in the afternoon is crazy.

Backlinks

AirFryerCalculator has managed to get only 74 links, but some are pretty good domains, such as Diabetes.co.uk or BusinessInsider.

Anyone can build a calculator like this with Creative Widgets.

Don’t trust me? Have a look below. I made this calculator in 5 minutes.

9. SnowDayCalculator.com

SnowDayCalculator predicts the likelihood of a snow day based on weather forecasts of the zip code.

About

SnowDayCalculator.com is a fun calculator website that predicts the probability of school closures due to snow. It was created in 2007 when the author was still a student.

The site uses weather data, historical statistics, and algorithms to calculate the likelihood of a snow day for a given location.

Users input their ZIP code, school type, and the snow accumulation forecast, and the calculator provides a percentage chance that schools will be closed due to snow the next day.

According to the about page, SnowDayCalculator gets over 5m visitors per year, not too bad for a high school project. Majority of traffic is coming during the winter months, especially when snow storms are reported.

The website is monetized via donations and ads, and is also replicated with iOS and Android apps.

Ahrefs Traffic

Currently Ahrefs reports 280k organic traffic. Keep in mind that its during the off-peak.

During proper winter peaks the organic traffic reaches well over over the 1m organic visitors.

Backlinks

SnowDayCalculator doesn’t have many backlinks, and only acquired 297 links over the years. But a lot of the links are super high authority like NY Times, and even AccuWeather has linked to this calculator.

10. ABraThatFits.org

ABraThatFits.org is a niche calculator dedicated to helping users find the perfect bra size.

About

Another unbelievable example of how single page calculator can make a dent in SERPs. A Bra That Fits offers a detailed bra size calculator that takes into account a range of measurements, to provide an accurate bra size recommendation.

When I first saw this calculator I couldn’t believe that this is actually a problem, so I had to ask the expert – my girlfriend.

As it turns out, selecting a correct bra size is huge pain, and there are differences between brands, so she never remembers the actual size.

This doesn’t come as surprise that A Bra That Fits also includes a community aspect, where users can share experiences, ask questions, and get advice on bra fitting.

Their subreddit has over 520k members, and their Facebook private group alone has nearly 30k members sharing and helping each other to select a bra.

Ahrefs Traffic

Ahrefs reports monthly organic traffic to be around 32k, but at its peak around 2021 the site nearly reached 600k.

The spike you see on the chart, is actually a result of the calculator going viral on TikTok in 2021. Mashable even wrote the article about it.

Personally, I think the traffic to the calculator is much higher, considering the community size and it’s nature, there is probably a high percentage of returning visitors.

Backlinks

A Bra That Fits has 832 backlinks, including big names like NY Times, Healthline, Bustle or Mashable.

Final Words

I hope you enjoyed reading this post as much as I enjoyed writing it.

Once again we have proven that you don’t actually need hundreds of pages, to drive a lot of organic traffic. Sometimes, all you need is a one niche focused calculator to solve a problem.

With Creative Widgets you can build just as helpful and beautiful calculators for your niche in no time.

Browse our collection of business calculators to see what you can build or start with free account today.

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