87%Overall Score
5Critical Issues
33Checks Passed
❌ Critical Issues (5)
Heading levels should only increase by one
Ensures the order of headings is semantically correct
Affected elements (1)
<h4><html> element must have a lang attribute
Ensures every HTML document has a lang attribute
Affected elements (1)
<html data-theme="dark" class="">Document should have one main landmark
Ensures the document has a main landmark
Affected elements (1)
<html data-theme="dark" class="">Zooming and scaling must not be disabled
Ensures <meta name="viewport"> does not disable text scaling and zooming
Affected elements (1)
<meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0,user-scalable=0">All page content should be contained by landmarks
Ensures all page content is contained by landmarks
Affected elements (43)
<div id="logo"><a href="/" accesskey="h"><img src="/images/logos/original.png" alt="The Calculator Site logo" class="logoImage noEzResize" width="185" height="80"></a></div><div class="addToPhone_btn textButton"><span class="buttonText">Add to phone</span> 📲</div><h1>Free Calculators and Converters</h1><p>
An extensive collection of free, highly-rated online calculators and converters covering finance, construction, education, health, cooking and math for everyday use. Trusted by millions - over 8 million calculations performed every month.
</p><form autocomplete="off" action="" id="tcsSearchHome">
<span><strong>Quick Search:</strong> </span>
<div class="autocomplete">
<input type="text" name="tcsSearch" id="tcsSearch" placeholder="I want to calculate/convert..." autofocus="">
</div>
</form><h2 class="sectionTitle">Financial Calculators</h2><p>
A suite of financial calculators to assist with projections for savings, investments, loans, mortgages and small business calculations.
</p><span class="featuredBoxText">
<strong>Compound Interest Calculator</strong>
<p>
Use our popular compound interest calculator to determine the future value of your savings or investments over time.
</p>
</span><span class="featuredBoxText">
<strong>Loan Calculator</strong>
<p>
Calculate repayments for personal loans, student loans or mortgages. You can also incorporate extra payments.
</p>
</span><div class="leftColModule"><h2 class="sectionTitle">Everyday Calculators</h2><p>
Common calculations for construction projects, math problems, date planning, and daily tasks. From square footage to percentages to age
calculations.
</p><span class="featuredBoxText">
<strong>Square Footage Calculator</strong>
<p>
Work out the square footage of an area for flooring, landscaping, carpets, or other construction projects.
</p>
</span><span class="featuredBoxText">
<strong>Percentage Calculator</strong>
<p>
Work out percentage increases, decreases or differences for tax, gratuities, discounts, grades or more.
</p>
</span><div class="leftColModule"><h2 class="sectionTitle">Featured Conversions</h2><p>
A series of individual converters for popular weight, length, height, area and energy units.
</p><span class="featuredBoxText">
<strong>Kilos to stone & pounds</strong>
<p>
Convert between these popular units of weight in the imperial and metric systems.
</p>
</span><span class="featuredBoxText">
<strong>Centimeters to feet & inches</strong>
<p>
Our popular calculator for converting units of height, length or distance.
</p>
</span><div class="leftColModule"><h2 class="sectionTitle">Health</h2><p>
A small collection of health calculators, from BMI and BMR through to pregnancy and exercise.
</p><span class="featuredBoxText">
<strong>Steps to Miles Calculator</strong>
<p>
Calculate how many miles you've walked and how many calories you've burned for your walk or run.
</p>
</span><span class="featuredBoxText">
<strong>Pregnancy Calculator</strong>
<p>
Use our calculator to work out your possible due date and see the key milestones on your pregnancy journey.
</p>
</span><div class="leftColModule"><h2 class="sectionTitle">Cooking Calculators</h2><p>
A suite of recipe calculators to help you with converting between metric and imperial units when baking or cooking.
</p><span class="featuredBoxText">
<strong>Cooking Converter</strong>
<p>
Use this recipe converter to quickly convert between all common units involved in cooking.
</p>
</span><span class="featuredBoxText">
<strong>Cups to Grams</strong>
<p>
Convert easily between cups and grams using this handy conversion tool.
</p>
</span><div class="leftColModule"><h2 class="sectionTitle">Unit Conversions</h2><p>
A series of unit converters for area, energy, fuel consumption, length & distance, volume, weight and more.
</p><span class="featuredBoxText">
<strong>Area Converter</strong>
<p>
Convert between acres, square centimeters, square feet, square miles and other units of area.
</p>
</span><span class="featuredBoxText">
<strong>Height Converter</strong>
<p>
Use this converter to change imperial measurements of height into metric, and vice-versa.
</p>
</span><div class="leftColModule"><h2>Are the calculators on our site free to use?</h2><p>
Yes, all the online calculators on The Calculator Site are free for you to use at your convenience. Our website is funded by the advertising we feature on our pages.
</p><p>
We hope you find our calculators useful. Founded in 2010, The Calculator Site evolved from our converter tools established in 2004. You can learn more
about The Calculator Site and the causes we support on our <a href="/aboutus.php">about page</a>.
</p><div id="footerBlock"><span style="display:block; color:white; font-weight:bold;">© Copyright 2026, Hazell Industries</span><span>
Hazell Industries Ltd, 124 City Road, London. EC1V 2NX
</span><div class="raptive-content-terms-footer"><a href="/" class="raptive-content-terms-footer-link" aria-haspopup="dialog" aria-controls="raptive-modal-1" aria-expanded="false">Terms of Content Use</a></div><span>A Raptive Partner Site</span>✅ Passed Checks (33)