Root Test Calculator
Free online root test calculator. Enter your values and get instant results with the formula, step-by-step working, a worked example and FAQs — everything runs locally in your browser on Calcton, no signup required.
中文版：根值判别法计算器
| n | aₙ | |aₙ|^(1/n) |
|---|---|---|
| 1 | 0.5 | 0.5 |
| 2 | 0.25 | 0.5 |
| 3 | 0.125 | 0.5 |
| 4 | 0.0625 | 0.5 |
| 5 | 0.03125 | 0.5 |
| 6 | 0.01563 | 0.5 |
| 7 | 0.00781 | 0.5 |
| 8 | 0.00391 | 0.5 |
| 9 | 0.00195 | 0.5 |
| 10 | 0.00098 | 0.5 |
| 11 | 0.00049 | 0.5 |
| 12 | 0.00024 | 0.5 |
| 13 | 0.00012 | 0.5 |
| 14 | 0.00006 | 0.5 |
| 15 | 0.00003 | 0.5 |
| 16 | 0.00002 | 0.5 |
How to use the Root Test Calculator
- Fill in the inputs with your own numbers — every field shows what it expects.
- The result updates instantly as you type; no "Calculate" click needed.
- Read the result card for the main figure, the step-by-step formula, and practical notes.
Frequently asked questions
Is the Root Test Calculator free?
Yes — all math calculators on Calcton are free, with no sign-up required. Your inputs are processed in your browser and never sent to a server.
Is there a Chinese version of this tool?
Yes. Use the Chinese version link above — it is the same calculator with the interface in Simplified Chinese.
References
Formulas and benchmarks used by this calculator follow these published sources.
KevinContent LeadCalcton Editorial Team · Last updated 2026-09-11
Kevin maintains Calcton's formula verification and content: every calculator cites the standard it implements, worked examples are recomputed programmatically, and health benchmarks follow WHO and international guidelines.
Related calculators
More in this category: Math calculators
About math calculators
Free online math calculators for algebra, statistics, number theory and everyday arithmetic — from quadratic equations and matrices to percentages, fractions and prime factorization, each with step-by-step formulas.