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Tip Calculator: metric vs imperial — both work

Kilograms-to-pounds, centimeters-to-inches: how Tip Calculator handles both unit systems, plus the tiny rounding gotchas to watch for.

ℹ️ For informational use only. This page describes how to use a calculator and how to read its result — it does not constitute medical, legal, or financial advice. For decisions that materially affect your health, finances, or legal situation, consult a qualified professional.

Most people use a Tip Calculator once a year — and forget the formula between uses. The good news: you don't need to remember it. The tool runs the math; this guide explains what's happening so you can read the result correctly.

Use the tool: Tip Calculator — Free, no account required, no watermark.

How Tip Calculator handles units

Tip Calculator accepts both metric and imperial inputs and internally converts everything to a common base. So whether you enter 70 kg or 154 lb, the resulting calculation is identical. There's no "metric mode" — both work side by side.

Quick conversion reference

If you need to convert mentally before pasting into Tip Calculator:

  • Kilograms ↔ pounds: 1 kg ≈ 2.2 lb
  • Centimeters ↔ inches: 1 in = 2.54 cm exactly
  • Meters ↔ feet: 1 m ≈ 3.28 ft
  • Liters ↔ US gallons: 1 gal ≈ 3.79 L

Open the tool

Tip Calculator →

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Frequently asked questions

Is Tip Calculator accurate?

Yes — it implements the standard, published formula. The numerical output matches what any reputable reference calculator would produce.

Does Tip Calculator store my inputs anywhere?

No. Calculations happen entirely in your browser. Nothing about your inputs is saved or transmitted.

Why does the result include a range, not just one number?

Because a single number rarely answers a real-world question. Tip Calculator provides the calculation plus the context needed to interpret it.

Can I use Tip Calculator offline?

Yes — once the page is loaded, it works without an internet connection.

Related guides


Ready to try it?

Run it in your browser: Tip Calculator. Browser-only. Nothing is sent to a server.


Last reviewed May 2026. File-size limits, portal requirements, and software defaults change over time — always verify with the destination platform before uploading time-sensitive documents. References to third-party services and products are for descriptive purposes only and do not imply any partnership or endorsement.