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.
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The full catalog
Search or filter by category. Every capability is its own endpoint with a published price.
⚙️ Developer UtilitiesFree
Oscillator quality factor calculator
resonant frequency and bandwidth
F
POST /mech/quality-factor$0.002⚙️ Developer UtilitiesFree
Springs in parallel calculator
equivalent spring constant
K
POST /mech/spring-parallel$0.002⚙️ Developer UtilitiesFree
Completing the square with worked steps
ax²+bx+c to a(x−h)²+k, free
G
POST /math/completing-the-square-works$0.002⚙️ Developer UtilitiesFree
Complex number calculator
add, subtract, multiply and divide a + bi
H
POST /math/complex-number$0.002⚙️ Developer UtilitiesFree
Complex number to polar form
magnitude and angle in radians and degrees
G
POST /math/complex-number-to-polar-form$0.002⚙️ Developer UtilitiesFree
Complex number to rectangular form
real and imaginary parts
G
POST /math/complex-number-to-rectangular-form$0.002⚙️ Developer UtilitiesFree
Complex number to trigonometric form
modulus and argument of a + bi
H
POST /math/complex-number-to-trigonometric-form$0.002⚙️ Developer UtilitiesFree
Archimedes principle calculator
buoyant force F_b = ρ V g, free
P
POST /mech/archimedes-buoyant-force$0.002⚙️ Developer UtilitiesFree
Simply supported beam center load calculator
reactions and maximum moment
F
POST /mech/beam-point-load-center$0.002⚙️ Developer UtilitiesFree
Will It Float Calculator
Compare Object and Fluid Density
F
POST /mech/float-or-sink$0.002⚙️ Developer UtilitiesFree
Gear train mechanical advantage calculator
speed and torque ratios
K
POST /mech/gear-train-advantage$0.002⚙️ Developer UtilitiesFree
Gravitational force comparison
two mass and distance setups
B
POST /mech/gravitational-force-ratio$0.002⚙️ Developer UtilitiesFree
Hydraulic lift calculator
mechanical advantage and output force
B
POST /mech/hydraulic-lift-advantage$0.002⚙️ Developer UtilitiesFree
Manometer pressure calculator
ΔP = ρ·g·Δh from fluid density and height
S
POST /mech/manometer-pressure$0.002⚙️ Developer UtilitiesFree
Pendulum energy calculator
kinetic and potential at any swing angle
S
POST /mech/pendulum-energy$0.002⚙️ Developer UtilitiesFree
Projectile time at height calculator
find both crossing times
F
POST /mech/projectile-time-at-height$0.002⚙️ Developer UtilitiesFree
Tipping angle stability
tilt from base width and CG height
S
POST /mech/tipping-stability$0.002⚙️ Developer UtilitiesFree
Torsional pendulum period
T = 2π√(I/κ) online
P
POST /mech/torsional-pendulum-period$0.002⚙️ Developer UtilitiesFree
Two-member bracket force calculator
tension and compression
B
POST /mech/truss-two-member$0.002⚙️ Developer UtilitiesFree
Lucas theorem calculator
C(n,k) mod prime p
S
POST /numth/lucas-theorem-binomial$0.002⚙️ Developer UtilitiesFree
Modular nth root calculator
all k-th roots of a mod prime p
P
POST /numth/modular-nth-root$0.002⚙️ Developer UtilitiesFree
Multiplicative order calculator
find the order of a modulo n
K
POST /numth/multiplicative-order$0.002⚙️ Developer UtilitiesFree
Baby-step giant-step calculator for discrete logarithms
K
POST /numth/baby-step-giant-step$0.002⚙️ Developer UtilitiesFree
Count primitive roots modulo n
F
POST /numth/count-primitive-roots$0.002⚙️ Developer UtilitiesFree
Complex root calculator
all nth roots of a complex number
G
POST /math/complex-root$0.002⚙️ Developer UtilitiesFree
Condition number calculator
2-norm from singular values, free
H
POST /math/condition-number$0.002⚙️ Developer UtilitiesFree
Cone surface area calculator
total, lateral and base area from r and l
H
POST /math/cone-surface-area$0.002⚙️ Developer UtilitiesFree
Idempotents modulo n calculator
B
POST /numth/idempotents-mod-n$0.002⚙️ Developer UtilitiesFree
Deterministic Miller–Rabin test
fixed witnesses, free
P
POST /numth/miller-rabin-deterministic$0.002⚙️ Developer UtilitiesFree
Nth power residue checker
is a a k-th power mod prime p
S
POST /numth/power-residue-check$0.002⚙️ Developer UtilitiesFree
Quadratic non-residues list mod p
all non-squares modulo odd prime
A
POST /numth/quadratic-nonresidues-list$0.002⚙️ Developer UtilitiesFree
Solovay-Strassen primality test with a chosen base
K
POST /numth/solovay-strassen-test$0.002⚙️ Developer UtilitiesFree
Conic section classifier
ellipse, parabola or hyperbola
G
POST /math/conic-sections$0.002⚙️ Developer UtilitiesFree
Fermat pseudoprime checker for any base
B
POST /numth/fermat-pseudoprime-check$0.002⚙️ Developer UtilitiesFree
Lucas pseudoprime checker
U-sequence test with parameters P,Q
A
POST /numth/lucas-pseudoprime-check$0.002⚙️ Developer UtilitiesFree
Prime signature calculator
sorted factorization exponents
K
POST /numth/prime-signature$0.002⚙️ Developer UtilitiesFree
Proth primality test
verify k × 2^n + 1 with a witness
F
POST /numth/proth-test$0.002⚙️ Developer UtilitiesFree
Smallest prime factor calculator
least prime factor of n
S
POST /numth/smallest-prime-factor$0.002⚙️ Developer UtilitiesFree
Complex conjugate calculator
flip the sign of the imaginary part
H
POST /math/conjugate$0.002⚙️ Developer UtilitiesFree
Consecutive integers calculator
find n numbers that sum to a target
G
POST /math/consecutive-integers$0.002⚙️ Developer UtilitiesFree
B-smooth numbers list
all B-smooth integers up to N
A
POST /numth/b-smooth-list$0.002⚙️ Developer UtilitiesFree
Integer square root calculator
floor sqrt with Newton iteration
F
POST /numth/integer-square-root$0.002⚙️ Developer UtilitiesFree
Mertens function calculator
compute M(n)
K
POST /numth/mertens-function$0.002⚙️ Developer UtilitiesFree
Perfect cube checker
is n a cube and what is its root
S
POST /numth/perfect-cube-check$0.002⚙️ Developer UtilitiesFree
Pollard's p−1 factorization
factor n with smoothness bound B
P
POST /numth/pollard-p-minus-one$0.002⚙️ Developer UtilitiesFree
Squarefree Number Checker
Test an Integer Online
B
POST /numth/squarefree-check$0.002⚙️ Developer UtilitiesFree
Unitary divisor sum calculator
compute sigma star of n
B
POST /numth/unitary-divisor-sum$0.002⚙️ Developer UtilitiesFree
Convolution calculator
discrete convolution of two sequences, free
G
POST /math/convolution$0.002⚙️ Developer UtilitiesFree
Coordinate distance calculator
Euclidean distance from x and y, free
H
POST /math/coordinate-distance$0.002⚙️ Developer UtilitiesFree
Cototient calculator
compute n minus Euler's totient
F
POST /numth/cototient$0.002⚙️ Developer UtilitiesFree
Highly Composite Number Checker
Test a Divisor Record
B
POST /numth/highly-composite-check$0.002⚙️ Developer UtilitiesFree
Jordan totient calculator
J_k(n) from prime factors
P
POST /numth/jordan-totient$0.002⚙️ Developer UtilitiesFree
Perfect number checker
is n equal to the sum of its proper divisors?
A
POST /numth/perfect-number-check$0.002⚙️ Developer UtilitiesFree
Practical number checker
every smaller integer as distinct divisor sums
S
POST /numth/practical-number-check$0.002⚙️ Developer UtilitiesFree
Sociable numbers checker
follow an aliquot sum cycle
F
POST /numth/sociable-numbers$0.002⚙️ Developer UtilitiesFree
Totatives list calculator
find every integer coprime to n
K
POST /numth/totatives-list$0.002⚙️ Developer UtilitiesFree
Corner point calculator
optimal LP vertex, free
H
POST /math/corner-point$0.002⚙️ Developer UtilitiesFree
Calkin-Wilf fraction index
position of a reduced rational a/b
S
POST /numth/calkin-wilf-index$0.002⚙️ Developer UtilitiesFree
Egyptian fraction term count
greedy unit-fraction expansion length
A
POST /numth/egyptian-fraction-length$0.002⚙️ Developer UtilitiesFree
Quadrant finder
locate a point's quadrant or axis from x, y coordinates
G
POST /math/coordinate-grid$0.002No capabilities match your search.
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1
Get your key
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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
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Free tools
$0.00
On-device utilities — hash, QR, JSON, Text→PDF and more — run in your browser. No account, no limits.
Pay-as-you-go
Per task
$0.002+
The full API — 7500+ capabilities — billed only for what you run, from $0.002 per call. No monthly fee.
Balance
$10.00+
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