We are the MonoTape team. You know that a kilogram is a thousand grams and a meter is a hundred centimeters — and yet, mid-task, you still pull out your phone and search it, because typing the multiplication feels riskier than just looking it up. Then you do it again the next day. The conversions you use most are the ones you keep re-searching. In this article we show how entering the formula yourself once and labeling it turns those repeat searches into a reusable line on the tape.
One honest note up front: MonoTape does not fetch conversion factors for you. You enter the formula yourself — and that is the point. You stay in control of exactly what you are converting, and the conversion you set up sticks around for next time instead of vanishing into a search box.
Searching is slow because the answer never stays
The reason you keep googling is not that you cannot multiply by a thousand. It is that a search gives you a one-off answer that disappears the moment you close the tab, and a plain calculator gives you a number with no record of what it was. Convert 2.4 * 1000 to get grams and the calculator shows 2400 — but nothing tells you that was kilograms to grams, and tomorrow you start from zero again.
So the cost is not the math, it is the repetition. Every conversion is a fresh search, a fresh chance to grab the wrong factor, and no memory of the ones you use all the time.
Set the factor once, label it, reuse it
In MonoTape you put each conversion factor on its own labeled line, then write the conversion as value times factor. The factor is yours — you typed it — so it is exactly the one you want, and it stays on the tape for next time.
Now the conversions you use most are sitting right there. Need to convert a different weight tomorrow? Change the value and the result recalculates against the same factor — no search, no second-guessing. The factor lines act like a tiny personal conversion table that you built and trust.
Convert a whole list in one place
Conversions rarely come one at a time — you are scaling a recipe, reading a spec sheet, or sizing a project. Reference one factor line from several conversions, and when you spot a value you typed wrong, you fix that one line while every conversion that shares the factor stays correct.
Re-googling the same conversions is a tool problem, not a memory problem. Enter the factor yourself once, label it, and reuse it from the tape. The conversions you reach for most stop being a search and become something you already have on hand.
MonoTape
A calculator notepad where you label your math and one edit recalculates everything. Conversions, estimates, split bills — whatever you calculate stays on the tape. Free to use.
Learn more about MonoTapeFrequently asked questions
Does MonoTape look up conversion factors for me?
No. You enter the factor yourself — like 1000 for kilograms to grams. That keeps you in control of exactly what you are converting, and the factor stays on the tape so you reuse it instead of searching again.
How do I reuse a conversion without retyping it?
Put the factor on its own labeled line and reference it from your conversions. Next time, just change the value — the result recalculates against the same factor automatically.
Can I convert a whole list of values at once?
Yes. Reference one factor line from several conversions and sum them if you like. Fix a single wrong value and every conversion sharing the factor stays correct.
Is it free?
Yes. Labeled calculations, references, auto-recalculation, and tape-style history — every feature mentioned here is free. It works on both iPhone and Android, and your data stays on your device.