Hours and minutes calculator

An hours and minutes calculator adds and subtracts lengths of time, like 7:45 plus 8:30. Enter durations from a timesheet or a project log to get the total in hours and minutes and in decimal hours. Free, with no sign-up.

Updated October 2026

Duration 1
Duration 2
Duration 3

Type 1:30, 1h 30m or 90m. Minutes after a colon go up to 59.

Total3:553.92 decimal hours, 235 minutes

Worked out with the free hours and minutes calculator by Staffic: staffic.io/resources/hours-and-minutes-calculator

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<iframe src="https://staffic.io/resources/embed/hours-minutes" title="Hours and minutes calculator by Staffic" width="100%" height="620" loading="lazy" style="border:0;width:100%;max-width:100%" data-staffic-embed="hours-minutes"></iframe>
<p style="margin:6px 0 0;font-size:13px"><a href="https://staffic.io/resources/hours-and-minutes-calculator?utm_source=resource&utm_medium=embed&utm_campaign=202611-resources&utm_content=hours-minutes">Hours and minutes calculator by Staffic</a></p>
<script>
/* Optional: fits the iframe to the calculator. The embed posts {type:"staffic:embed-height", tool, height}
   to this page whenever its height changes; this sets the matching iframe's height in pixels. */
addEventListener("message",function(e){if(e.origin!=="https://staffic.io"||!e.data||e.data.type!=="staffic:embed-height")return;
document.querySelectorAll('iframe[data-staffic-embed="'+e.data.tool+'"]').forEach(function(f){if(f.contentWindow===e.source)f.style.height=Math.ceil(e.data.height)+"px"})});
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Free to use with the link back to Staffic.

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