61 tools, 120 API functions
Exact math your LLM gets wrong
60+ math and science calculators via REST API and MCP. Statistics, algebra, geometry, number theory, unit conversion. Deterministic results, not stochastic guesses.
What you get
Statistics: z-score, confidence interval, normal distribution, percentile
Algebra: quadratic, GCF/LCM, factorial (BigInt exact), permutations
Geometry: triangle solver (SSS/SAS/ASA), circle, sphere, cylinder
Number theory: prime check, factors, square roots, base conversion
Unit conversion: 200+ conversion pairs (temperature, length, weight, speed)
Try it now
Copy any example. No signup needed for the first 50 calls/day.
cURL - Statistical analysis
# Z-score and p-value
curl -X POST https://toolknife.com/api/v1/tools/z-score-calculator_calculate \
-H "Content-Type: application/json" \
-d '{"value": 85, "mean": 75, "stdDev": 10}'
# Response: { "zScore": 1.0, "percentile": 84.13, "pValue": 0.1587 }
# Confidence interval
curl -X POST https://toolknife.com/api/v1/tools/confidence-interval-calculator_calculate \
-H "Content-Type: application/json" \
-d '{"mean": 75, "stdDev": 10, "sampleSize": 50, "confidenceLevel": 95}'
# Response: { "lower": 72.23, "upper": 77.77, "marginOfError": 2.77 }Python - Geometry solver
import requests
BASE = "https://toolknife.com/api/v1/tools"
# Solve a triangle from three sides
triangle = requests.post(f"{BASE}/triangle-calculator_solve", json={
"mode": "SSS",
"a": 5, "b": 7, "c": 9,
}).json()["result"]
print(f"Angles: {triangle['angleA']}°, {triangle['angleB']}°, {triangle['angleC']}°")
print(f"Area: {triangle['area']}")
print(f"Perimeter: {triangle['perimeter']}")
# Circle calculations
circle = requests.post(f"{BASE}/circle-calculator_calculate", json={
"radius": 10,
}).json()["result"]
print(f"Area: {circle['area']}, Circumference: {circle['circumference']}")JavaScript - Unit conversion
// Temperature conversion
const tempRes = await fetch(
"https://toolknife.com/api/v1/tools/temperature-converter_convert",
{
method: "POST",
headers: { "Content-Type": "application/json" },
body: JSON.stringify({ value: 98.6, from: "fahrenheit", to: "celsius" }),
}
);
const temp = await tempRes.json();
// { "result": { "value": 37.0, "from": "fahrenheit", "to": "celsius" } }
// Factorial (exact via BigInt)
const factRes = await fetch(
"https://toolknife.com/api/v1/tools/factorial-calculator_calculate",
{
method: "POST",
headers: { "Content-Type": "application/json" },
body: JSON.stringify({ n: 50 }),
}
);
const fact = await factRes.json();
// Exact result, not floating point approximationWho uses this
EdTech platforms, STEM apps, scientific computing
Education platforms
Power homework helpers, step-by-step solvers, and interactive math exercises with exact answers.
Scientific computing
Add unit conversion, statistical analysis, and geometry calculations to research tools.
AI agents
Give your LLM access to deterministic math. No more 'sorry, I miscalculated' with exact formulas behind every answer.
Featured tools
Pricing
Same API, same MCP. Pick the limit that fits.
Free
$0 forever
- 50 calls/day (no signup)
- 200 calls/day (free account)
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