ForHosting KIT

Everything you need.
One Kit.

Hundreds of ready-made tasks — PDF, images, audio, OCR, text AI, scraping, data and more — behind a single REST API. Send a job, get a finished result by webhook. No servers, no per-model tokens, a price you can read.

REST APILive
EmailLive
Webforhosting.com/kitLive
TelegramLive
iOS & AndroidBuilding
WhatsAppComing
7554ready-made tools
6channels
1API & key
$0.002per call, from

New capabilities

Fresh in the kit — just landed.

New⚙️ Developer UtilitiesVolume to density calculatorρ=m/V from mass and volumeAabuela$0.002Open phys.volume_to_densityNew⚙️ Developer UtilitiesVoltage regulation calculator% from no-load and full-load VSsamurai$0.002Open phys.voltage_regulationNew⚙️ Developer UtilitiesVickers hardness number calculatorHV from force and diagonalPPavilion$0.002Open phys.vickers_hardness_numberNew⚙️ Developer UtilitiesVelocity calculatoraverage v = d/t in metres per secondAabuela$0.002Open phys.velocityNew⚙️ Developer UtilitiesValve flow coefficient calculatorCv from GPM, ΔP and GSsamurai$0.002Open phys.valve_flow_coefficientNew⚙️ Developer UtilitiesBarrel twist rate calculatorGreenhill formula, one turn per inchPPavilion$0.002Open phys.twist_rateNew⚙️ Developer UtilitiesTrue strain calculatorε_t = ln(1+ε) from engineering strainAabuela$0.002Open phys.true_strainNew⚙️ Developer UtilitiesTransmission coefficient calculatorpower T from η₁, η₂Ssamurai$0.002Open phys.transmissionNew⚙️ Developer UtilitiesTorsional stiffness calculatorκ = GJ/L in N·m/rad, freePPavilion$0.002Open phys.torsional_stiffnessNew⚙️ Developer UtilitiesTorsional spring calculatorκ = E d⁴ / (64 D N), N·mm/radAabuela$0.002Open phys.torsional_springNew⚙️ Developer UtilitiesToilet paper race mass moment of inertiaI = ½m(ri²+ro²)Ssamurai$0.002Open phys.toilet_paper_race_mass_moment_inertiaNew⚙️ Developer UtilitiesTime dilation calculatordilated time from proper time and velocityPPavilion$0.002Open phys.time_dilation

The full catalog

Search or filter by category. Every capability is its own endpoint with a published price.

⚙️ Developer UtilitiesFree
Volumetric expansion calculator
ΔV = V₀βΔT thermal volume change, free
Ssamurai
POST /thermo/volumetric-expansion$0.002
⚙️ Developer UtilitiesFree
Carry-on size checker
does your bag fit airline limits, free
Ssamurai
POST /travel/carry-on-check$0.002
⚙️ Developer UtilitiesFree
EV range calculator
km or miles from battery kWh and efficiency, free
Ssamurai
POST /travel/ev-range$0.002
⚙️ Developer UtilitiesFree
Jet lag recovery calculator
days to adjust by time zones, free
Ssamurai
POST /travel/jet-lag-recovery$0.002
⚙️ Developer UtilitiesFree
Layover connection time checker
length vs minimum MCT, free
Ssamurai
POST /travel/layover-time$0.002
⚙️ Developer UtilitiesFree
Trip fuel volume calculator
liters or gallons from distance and MPG, free
Ssamurai
POST /travel/trip-fuel-volume$0.002
⚙️ Developer UtilitiesFree
Trip total cost calculator
fuel, tolls, lodging and food budget, free
Ssamurai
POST /travel/trip-total-cost$0.002
⚙️ Developer UtilitiesFree
Degrees to radians converter
and back, free online
Ssamurai
POST /trig/deg-to-rad$0.002
⚙️ Developer UtilitiesFree
Hypotenuse calculator
find c or a missing leg free online
Ssamurai
POST /trig/hypotenuse$0.002
⚙️ Developer UtilitiesFree
Arcsine calculator
asin in degrees and radians, free
Ssamurai
POST /trig/inverse-sin$0.002
⚙️ Developer UtilitiesFree
Trig identity verifier
Pythagorean and quotient residuals, free
Ssamurai
POST /trig/pythagorean-identity$0.002
⚙️ Developer UtilitiesFree
Secant, cosecant & cotangent calculator
free online
Ssamurai
POST /trig/secant-cosecant$0.002
⚙️ Developer UtilitiesFree
Unit circle calculator
cos, sin, and radians, free online
Ssamurai
POST /trig/unit-circle$0.002
⚙️ Developer UtilitiesFree
Binomial expansion calculator
expand (a+b)^n, free
Aabuela
POST /algebra/binomial-expansion$0.002
⚙️ Developer UtilitiesFree
Cramer's rule calculator
solve Ax=b with determinants, free
AAspire
POST /algebra/cramers-rule$0.002
⚙️ Developer UtilitiesFree
Cubic equation solver
all three roots of ax³+bx²+cx+d=0 via Cardano, free
AAspire
POST /algebra/cubic-equation$0.002
⚙️ Developer UtilitiesFree
Discriminant calculator
b² − 4ac and root type, free
PPavilion
POST /algebra/discriminant$0.002
⚙️ Developer UtilitiesFree
Dot product calculator
vectors, angle, free online
PPavilion
POST /algebra/dot-product$0.002
⚙️ Developer UtilitiesFree
2×2 eigenvalue calculator
characteristic equation, free
PPavilion
POST /algebra/eigenvalues-2x2$0.002
⚙️ Developer UtilitiesFree
Exponential equation solver
solve b^x = y for x with logs, free
AAspire
POST /algebra/exponential-equation$0.002
⚙️ Developer UtilitiesFree
Factor quadratic calculator
ax²+bx+c into binomials over rationals, free
AAspire
POST /algebra/factor-quadratic$0.002
⚙️ Developer UtilitiesFree
Gaussian elimination solver
solve Ax = b with back-substitution, free
Aabuela
POST /algebra/gaussian-elimination$0.002
⚙️ Developer UtilitiesFree
Linear equation solver
solve ax + b = c for x, free
PPavilion
POST /algebra/linear-equation$0.002
⚙️ Developer UtilitiesFree
Logarithm expand & condense
product, quotient, power laws, free
PPavilion
POST /algebra/log-expand$0.002
⚙️ Developer UtilitiesFree
Logarithm calculator
log base b of x, ln and log10, free
Aabuela
POST /algebra/logarithm$0.002
⚙️ Developer UtilitiesFree
Matrix addition & subtraction
entrywise, free online
Aabuela
POST /algebra/matrix-add$0.002
⚙️ Developer UtilitiesFree
Matrix determinant calculator
det(A) via cofactor expansion or LU, free
AAspire
POST /algebra/matrix-determinant$0.002
⚙️ Developer UtilitiesFree
Matrix rank calculator
row echelon form and pivots, free
PPavilion
POST /algebra/matrix-rank$0.002
⚙️ Developer UtilitiesFree
Matrix trace calculator
sum of main diagonal entries of a square matrix, free
AAspire
POST /algebra/matrix-trace$0.002
⚙️ Developer UtilitiesFree
Matrix transpose calculator
swap rows and columns, free online
Aabuela
POST /algebra/matrix-transpose$0.002
⚙️ Developer UtilitiesFree
Partial fraction decomposition
proper rational with linear & quadratic factors, free
AAspire
POST /algebra/partial-fractions$0.002
⚙️ Developer UtilitiesFree
Polynomial addition calculator
add or subtract coefficient lists, simplified result, free
AAspire
POST /algebra/polynomial-add$0.002
⚙️ Developer UtilitiesFree
Polynomial multiplication calculator
multiply two coefficient lists, free
PPavilion
POST /algebra/polynomial-multiply$0.002
⚙️ Developer UtilitiesFree
Polynomial root finder
all real roots from coefficients, free
Aabuela
POST /algebra/polynomial-roots$0.002
⚙️ Developer UtilitiesFree
Quadratic formula solver
roots, discriminant and vertex of ax²+bx+c=0, free
AAspire
POST /algebra/quadratic-formula$0.002
⚙️ Developer UtilitiesFree
Rational root theorem
list candidate roots p/q, free
Aabuela
POST /algebra/rational-root$0.002
⚙️ Developer UtilitiesFree
Remainder theorem calculator
evaluate p(r) by Horner, free
PPavilion
POST /algebra/remainder-theorem$0.002
⚙️ Developer UtilitiesFree
Synthetic division calculator
divide by x − r, free
Aabuela
POST /algebra/synthetic-division$0.002
⚙️ Developer UtilitiesFree
Solve a 2×2 system of linear equations
Cramer's rule, free
Aabuela
POST /algebra/system-2x2$0.002
⚙️ Developer UtilitiesFree
Vector magnitude calculator
Euclidean norm and unit vector, free
AAspire
POST /algebra/vector-magnitude$0.002
⚙️ Developer UtilitiesFree
Vector projection calculator
scalar & vector proj, free
Aabuela
POST /algebra/vector-projection$0.002
⚙️ Developer UtilitiesFree
Vieta's formulas calculator
sum and product of polynomial roots from coefficients, free
AAspire
POST /algebra/vieta-formulas$0.002
⚙️ Developer UtilitiesFree
Angular size calculator
diameter in degrees & arcmin, free
PPavilion
POST /astro/angular-size$0.002
⚙️ Developer UtilitiesFree
Apoapsis and periapsis calculator
from semi-major axis and eccentricity, free
Aabuela
POST /astro/apoapsis-periapsis$0.002
⚙️ Developer UtilitiesFree
Apparent brightness calculator
L/(4πd²) inverse square, free
PPavilion
POST /astro/apparent-brightness$0.002
⚙️ Developer UtilitiesFree
Planet escape velocity calculator
v = √(2GM/r), free
PPavilion
POST /astro/body-escape-velocity$0.002
⚙️ Developer UtilitiesFree
Distance modulus calculator
parsecs & light-years, free
Aabuela
POST /astro/distance-modulus$0.002
⚙️ Developer UtilitiesFree
Geostationary orbit calculator
altitude from mass and rotation period, free
AAspire
POST /astro/geostationary-orbit$0.002
⚙️ Developer UtilitiesFree
Gravitational force calculator
Newton's law F=Gm₁m₂/r² free
AAspire
POST /astro/gravitational-force$0.002
⚙️ Developer UtilitiesFree
Hubble law calculator
galaxy distance from recession velocity and H0, free
AAspire
POST /astro/hubble-distance$0.002
⚙️ Developer UtilitiesFree
Light-year converter
km, parsecs and AU, free
Aabuela
POST /astro/light-year-distance$0.002
⚙️ Developer UtilitiesFree
Orbital energy calculator
potential and total energy from mass and radius, free
Aabuela
POST /astro/orbital-energy$0.002
⚙️ Developer UtilitiesFree
Orbital period calculator
Kepler T from semi-major axis and mass, free
AAspire
POST /astro/orbital-period$0.002
⚙️ Developer UtilitiesFree
Orbital velocity calculator
circular speed from mass and radius, free
Aabuela
POST /astro/orbital-velocity$0.002
⚙️ Developer UtilitiesFree
Stellar parallax calculator
star distance from parallax angle in parsecs and light-years, free
AAspire
POST /astro/parallax-distance$0.002
⚙️ Developer UtilitiesFree
Redshift calculator
z and recession velocity from wavelengths, free
PPavilion
POST /astro/redshift-velocity$0.002
⚙️ Developer UtilitiesFree
Roche limit calculator
tidal breakup distance from densities and radius, free
AAspire
POST /astro/roche-limit$0.002
⚙️ Developer UtilitiesFree
Synodic period calculator
from two orbital periods, free
Aabuela
POST /astro/synodic-period$0.002
⚙️ Developer UtilitiesFree
Rocket equation calculator
Δv = ve·ln(m₀/m_f), free
PPavilion
POST /astro/tsiolkovsky-rocket$0.002
⚙️ Developer UtilitiesFree
Weight on other planets calculator
Earth weight to Mercury Mars Jupiter free
AAspire
POST /astro/weight-on-planet$0.002

How it works

1

Get your key

Create an account with your email and add balance when you need it. No subscription, no sales call.

2

Call the endpoint

One authenticated POST. The API returns a task_id immediately — copy-paste snippets in five languages on every page.

3

Collect the result

Receive a signed webhook the moment it's ready, or fetch a signed link. A failed task is never charged.

Pay only for what you use

No subscription. Free tools run in your browser; paid tasks draw from your balance, which never expires.

Free tools
$0.00

On-device utilities — hash, QR, JSON, Text→PDF and more — run in your browser. No account, no limits.

Balance
$10.00+

Top up your balance and spend it across web, API and the app. It never expires.