Nothing is uploaded
Your file is read into memory by the browser and processed there. No copy exists on any server, so confidential material stays confidential.
Calculators
Calculators answer bounded numeric questions: what height keeps a 16:9 frame at 1280px wide, how long a 1,800-word article takes to read, what a percentage discount leaves you paying. Each one shows the working so you can sanity-check the result rather than trusting a black box.
Aspect Ratio Calculator
Work out the missing width or height for any target ratio.
Reading Time Calculator
Estimate silent reading and spoken delivery time from a word count.
Percentage Calculator
Percentages, increases, decreases and differences with the working shown.
How these tools work
No account, no cap
There is no sign-up wall, no daily quota and no watermark. Open the page and work.
Installable and offline
Add Toolspea to your home screen and the tools you have opened keep working without a connection.
Calculators — frequently asked questions
Related guides and categories
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