Math Tools — Free Online Tools
Everyday maths helpers are being rebuilt here — percentage, scientific, fractions and more. Bookmark this page; converters and finance tools already cover urgent needs.
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Basic calculators, without the clutter. (Rebuilding.)
A practical guide to math tools on DailyTool
In short: Everyday maths helpers are being rebuilt here — percentage, scientific, fractions and more. Bookmark this page; converters and finance tools already cover urgent needs.
Honest update: the dedicated math calculators are being rebuilt right now, so this page looks empty. I'm rewriting them to show steps, not just answers — because '42%' means nothing if you don't know 42% of what.
Meanwhile: need percent right now? Currency + Conversion sections already handle live percent-style maths. Need EMI maths? Finance section is fully working. This page will fill up over the next few updates.
Who are these math tools for?
Everyday jobs these tools handle well
Students
Percent, fractions, roots — with steps once rebuild lands.
Shop owners
Discount and GST-style percent maths (use Conversion + Finance for now).
Everyone
Quick everyday arithmetic without installing an app.
How to get it right the first time
3 simple steps
For urgent percent maths today
Use Finance/Conversion tools — they already do live calculations correctly.
After relaunch: enter, then read the steps
New calculators will show the formula with your numbers filled in, so you can copy it into homework.
Round at the end, not the middle
Keep 2 extra decimals while calculating, round only the final answer. Early rounding is why totals drift by a rupee or two.
Real situations where this helps
Taken from jobs people actually do
Shop discount: Rs 1,499 minus 20%
1,499 x 0.80 = Rs 1,199.20. If there's extra 5% off, apply on 1,199 — not on 1,499 again.
Marks: 427 out of 500
427 / 500 x 100 = 85.4%. Same formula for any 'X out of Y' — divide first, then multiply.
Split Rs 2,450 among 3 fairly
816.66 each doesn't work with cash. Do 817 + 817 + 816 and note who paid extra — avoids awkwardness.
Mistakes people make (so you don't have to)
Quick things worth knowing before you start
Adding 10% then subtracting 10%
You don't get back to start (100 → 110 → 99). Percentages don't reverse cleanly.
Rounding every line in a bill
Round only the grand total. Rounding each item first creates small mismatches.
Trusting phone calculator without checking input
Most 'wrong answers' are mistyped brackets. Re-enter slowly before doubting the maths.
Frequently Asked Questions
Questions people actually ask about math tools