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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
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⚙️ Developer UtilitiesFree
Two capacitor series calculator
product-over-sum Ceq, free
A
POST /elec/two-capacitors-series$0.002⚙️ Developer UtilitiesFree
Capacitive voltage divider
Vout from two series capacitors, free
S
POST /elec/capacitive-divider$0.002⚙️ Developer UtilitiesFree
Capacitor ESR power loss calculator
ripple-current heating
K
POST /elec/capacitor-esr-loss$0.002⚙️ Developer UtilitiesFree
Capacitor dielectric field strength calculator
breakdown safety margin
F
POST /elec/dielectric-field-strength$0.002⚙️ Developer UtilitiesFree
RC charging voltage at time calculator
V(t)=Vs(1−e^(−t/RC)), free
P
POST /elec/rc-charge-voltage$0.002⚙️ Developer UtilitiesFree
RC snubber design calculator
resistor and capacitor for relay or MOSFET
A
POST /elec/rc-snubber$0.002⚙️ Developer UtilitiesFree
Series capacitor voltage sharing calculator
check individual ratings
B
POST /elec/series-cap-voltage-share$0.002⚙️ Developer UtilitiesFree
AC real power calculator
RMS voltage, RMS current and power factor
K
POST /elec/ac-real-power$0.002⚙️ Developer UtilitiesFree
Air core solenoid inductance calculator
L = μ₀N²A/l
K
POST /elec/air-solenoid-inductance$0.002⚙️ Developer UtilitiesFree
Coupling coefficient calculator
mutual and self inductance
B
POST /elec/coupling-coefficient$0.002⚙️ Developer UtilitiesFree
Series RLC impedance calculator
magnitude and phase
B
POST /elec/impedance-rlc-series$0.002⚙️ Developer UtilitiesFree
Inductance from reactance calculator
L = XL/(2πf) in henries, free
S
POST /elec/inductance-from-reactance$0.002⚙️ Developer UtilitiesFree
Inductor current ripple calculator
ΔI = V·D/(L·f) peak-to-peak
P
POST /elec/inductor-current-ripple$0.002⚙️ Developer UtilitiesFree
RF choke impedance calculator
check signal blocking
F
POST /elec/rf-choke-impedance$0.002⚙️ Developer UtilitiesFree
Sine average voltage calculator
Vavg = (2/π)·Vpeak, free
S
POST /elec/vavg-sine$0.002⚙️ Developer UtilitiesFree
VRMS from peak voltage calculator
Vpeak ÷ √2 sine wave, free
A
POST /elec/vrms-from-vpeak$0.002⚙️ Developer UtilitiesFree
Series RL impedance calculator
|Z| and phase from R, L, f
P
POST /elec/impedance-rl-series$0.002⚙️ Developer UtilitiesFree
Line to phase voltage calculator
V_LL ↔ V_LN with √3 (wye)
S
POST /elec/line-phase-voltage$0.002⚙️ Developer UtilitiesFree
Phase shift to time delay calculator
K
POST /elec/phase-shift-time$0.002⚙️ Developer UtilitiesFree
RLC resonance Q factor calculator
series and parallel circuits
F
POST /elec/resonance-q-factor$0.002⚙️ Developer UtilitiesFree
Shockley diode equation calculator
calculate diode current
B
POST /elec/shockley-diode$0.002⚙️ Developer UtilitiesFree
BJT Voltage Divider Bias Calculator
B
POST /elec/bjt-divider-bias$0.002⚙️ Developer UtilitiesFree
Full-wave rectifier output calculator
DC average and peak voltage
K
POST /elec/fullwave-rectifier$0.002⚙️ Developer UtilitiesFree
Impedance from R and X calculator
|Z| and phase free
A
POST /elec/impedance-from-rx$0.002⚙️ Developer UtilitiesFree
LED series string calculator
max LEDs and dropping resistor
P
POST /elec/led-series-string$0.002⚙️ Developer UtilitiesFree
Linear regulator power calculator
dissipation for heat sink sizing
S
POST /elec/linear-regulator-power$0.002⚙️ Developer UtilitiesFree
Zener diode power calculator
check dissipation and rating
F
POST /elec/zener-power$0.002⚙️ Developer UtilitiesFree
Aliasing frequency calculator
fold signal above Nyquist to f_alias
S
POST /elec/aliased-frequency$0.002⚙️ Developer UtilitiesFree
Battery C rate calculator
convert C rate and current
B
POST /elec/battery-c-rate$0.002⚙️ Developer UtilitiesFree
Battery depth of discharge calculator
usable capacity and cycle life
K
POST /elec/battery-dod$0.002⚙️ Developer UtilitiesFree
Binary multiplication calculator
shift and add steps
B
POST /elec/binary-multiplication$0.002⚙️ Developer UtilitiesFree
Binary to BCD converter
binary number to 8421 BCD (7-segment)
P
POST /elec/binary-to-bcd$0.002⚙️ Developer UtilitiesFree
Bits Needed for Values Calculator
Minimum Binary Width
K
POST /elec/bits-for-values$0.002⚙️ Developer UtilitiesFree
Bitwise XOR calculator
exclusive OR of two integers, free
A
POST /elec/bitwise-xor$0.002⚙️ Developer UtilitiesFree
Boolean expression truth table calculator
AND, OR, NOT
S
POST /elec/boolean-truth-table$0.002⚙️ Developer UtilitiesFree
Boost converter duty cycle calculator
D = 1 − Vin/Vout, free
P
POST /elec/boost-duty$0.002⚙️ Developer UtilitiesFree
Switching converter input current calculator
Iin from Pout, Vin and η
S
POST /elec/converter-input-current$0.002⚙️ Developer UtilitiesFree
DAC output voltage calculator
Vout from code, Vref and bits
A
POST /elec/dac-output$0.002⚙️ Developer UtilitiesFree
dB to gain ratio calculator
convert voltage or power gain
B
POST /elec/gain-db-to-ratio$0.002⚙️ Developer UtilitiesFree
Gray code to binary calculator for encoder values
F
POST /elec/gray-to-binary$0.002⚙️ Developer UtilitiesFree
Johnson counter states calculator
twisted-ring states (2n)
P
POST /elec/johnson-counter$0.002⚙️ Developer UtilitiesFree
Monostable timer period calculator
calculate one-shot duration
F
POST /elec/monostable-period$0.002⚙️ Developer UtilitiesFree
MOSFET switching loss calculator
Psw from Vds, Id, tr, tf, f
A
POST /elec/mosfet-switching-loss$0.002⚙️ Developer UtilitiesFree
555 astable frequency calculator
calculate frequency from R1, R2 and C
B
POST /elec/ne555-frequency$0.002⚙️ Developer UtilitiesFree
Op-amp buffer follower calculator
unity gain and output voltage
K
POST /elec/opamp-follower$0.002⚙️ Developer UtilitiesFree
Op-amp full-power bandwidth calculator
f = SR/(2π·Vpeak), free
S
POST /elec/opamp-full-power-bw$0.002⚙️ Developer UtilitiesFree
Op-amp integrator calculator
output slope and RC time constant
F
POST /elec/opamp-integrator$0.002⚙️ Developer UtilitiesFree
Product of sums maxterm calculator
canonical POS expression
F
POST /elec/pos-maxterms$0.002⚙️ Developer UtilitiesFree
PWM resolution bits calculator
timer clock and PWM frequency
K
POST /elec/pwm-resolution$0.002⚙️ Developer UtilitiesFree
Signed magnitude representation calculator
encode and decode binary
K
POST /elec/signed-magnitude$0.002⚙️ Developer UtilitiesFree
Transistor power dissipation calculator
P = Vce × Ic free
P
POST /elec/transistor-power$0.002⚙️ Developer UtilitiesFree
UART frame time calculator
baud rate, data, parity and stop bits
F
POST /elec/uart-frame-time$0.002⚙️ Developer UtilitiesFree
XOR checksum calculator
byte list integrity check
B
POST /elec/xor-checksum$0.002⚙️ Developer UtilitiesFree
Solar battery bank sizing calculator
Ah from load, autonomy & DoD
S
POST /elec/solar-battery-bank$0.002⚙️ Developer UtilitiesFree
Wire gauge selection calculator
current, length and voltage drop
F
POST /elec/wire-gauge-selection$0.002⚙️ Developer UtilitiesFree
Fuse I²t melting calculator
compare fault current and duration
K
POST /elec/fuse-i2t$0.002⚙️ Developer UtilitiesFree
Thermal resistance stack calculator
junction temperature rise
B
POST /elec/thermal-resistance-stack$0.002⚙️ Developer UtilitiesFree
Wire ampacity derating calculator
temperature and bundling factors
A
POST /elec/wire-ampacity-derating$0.002⚙️ Developer UtilitiesFree
dB attenuation calculator
voltage & power linear ratios
S
POST /elec/db-attenuation$0.002⚙️ Developer UtilitiesFree
Power bank phone charges calculator
recharges from mAh and efficiency
P
POST /elec/power-bank-charges$0.002No capabilities match your search.
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1
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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.
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Per task
$0.002+
The full API — 7500+ capabilities — billed only for what you run, from $0.002 per call. No monthly fee.
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$10.00+
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