🧮Free CalculatorUpdated 2026

Calculadora de Weight Loss

Calcula Tu Weight Loss al Instante

Calcula weight loss de forma precisa con nuestra herramienta gratuita. Resultados instantáneos.

Dashboard
Your complete health overview in one place
🔥
14-day streak
Logged 18 of 18 scheduled shots
Next Shot Reminder
ACTIVE MEDICATIONS
TirzepatideB12
TIRZEPATIDE
🔥 14
2
days away
Thursday · 7.5mg
Medication Supply
Tirzepatide
6.2 / 10 mg · Vial
~42 days left · Mar 15
B12
4.4 / 5 ml · Vial
~88 days left · May 8
Retatrutide
1.2 / 5 mg · Vial
~6 days left · refill soon
Medication Level Predictor
Estimated serum level & future decay
~5 days
Half-Life
7 Days2 Weeks1 Month90 Days
CURRENT LEVEL
5.42mg
Mar 6
● Today
ACTIVE MEDICATIONS
TirzepatideRetatrutide
TODAY5.42 mgFeb 14Feb 22Mar 14
0mg2.7mg5.42mg (Peak)
18
Total Injections
💉 All time
122/78
Average BP
🩺 mmHg
8.4
Avg Mood
😊 /10
Health Chart
1mAll
218.6lb
↓ 8.4 lb · 3.7%
WeightInjectionsBPMood
2282222162102277.5mg7.5mg4mg10mg218
Feb 6Feb 14Feb 22Mar 2Today
Photos
12 photos · 2w streak
Week 1
Week 7
Today
Scheduled Reminders
Weight
Due today
Mood
Done
Blood Pressure
Tomorrow
Body Measurements
In 3 days
Dashboard
Your complete health overview in one place
🔥
14-day streak
Logged 18 of 18 scheduled shots
Next Shot Reminder
ACTIVE MEDICATIONS
TirzepatideB12
TIRZEPATIDE
🔥 14
2
days away
Thursday · 7.5mg
Medication Supply
Tirzepatide
6.2 / 10 mg · Vial
~42 days left · Mar 15
B12
4.4 / 5 ml · Vial
~88 days left · May 8
Retatrutide
1.2 / 5 mg · Vial
~6 days left · refill soon
Medication Level Predictor
Estimated serum level & future decay
~5 days
Half-Life
7 Days2 Weeks1 Month90 Days
CURRENT LEVEL
5.42mg
Mar 6
● Today
ACTIVE MEDICATIONS
TirzepatideRetatrutide
TODAY5.42 mgFeb 14Feb 22Mar 14
0mg2.7mg5.42mg (Peak)
18
Total Injections
💉 All time
122/78
Average BP
🩺 mmHg
8.4
Avg Mood
😊 /10
Health Chart
1mAll
218.6lb
↓ 8.4 lb · 3.7%
WeightInjectionsBPMood
2282222162102277.5mg7.5mg4mg10mg218
Feb 6Feb 14Feb 22Mar 2Today
Photos
12 photos · 2w streak
Week 1
Week 7
Today
Scheduled Reminders
Weight
Due today
Mood
Done
Blood Pressure
Tomorrow
Body Measurements
In 3 days
01BACKGROUND

Referencias de Ensayos Publicados

A realistic weight-loss goal has three parts: how much, how fast, and how you will hold the deficit. For most people a 5–10% loss is a strong first target and already improves blood pressure, blood sugar, and cholesterol.

Weight loss comes from an energy deficit — roughly 7700 kcal under maintenance per kilogram of fat (about 3500 kcal per pound). A daily deficit of 250–1000 kcal gives a sustainable 0.25–0.9 kg (about 0.5–2 lb) per week. GLP-1 medications such as semaglutide and tirzepatide mainly help by lowering appetite, which makes that deficit easier to keep.

02FULL DATA

Cómo Interpretar el Resultado

📊 Cómo Interpretar el Resultado
Weekly weight loss = winning arm
Daily calorie deficitWeekly weight loss
250 kcal/day~0.25 kg (0.5 lb)Best
500 kcal/day~0.45 kg (1 lb)
750 kcal/day~0.7 kg (1.5 lb)
1000 kcal/day~0.9 kg (2 lb)
Source — About 7700 kcal ≈ 1 kg of fat (3500 kcal ≈ 1 lb). A 0.25–0.9 kg (0.5–2 lb) weekly loss is the usual sustainable range; faster loss raises the risk of muscle loss and rebound.
03FULL DATA

Cómo Usar Esta Calculadora

📊 Cómo Usar Esta Calculadora
Trial duration (weeks) = winning arm
MedicationAvg. total weight lossTrial duration (weeks)
Liraglutide (Saxenda)~8%56Best
Semaglutide 2.4 mg (Wegovy)~15%68
Tirzepatide 15 mg (Zepbound)~21%72
Retatrutide 12 mg (phase 2)~24%48
Source — Average total body-weight loss at the top maintenance dose in pivotal trials (SCALE, STEP, SURMOUNT, phase-2 retatrutide). Individual results vary with dose, adherence, diet, and activity — these are benchmarks, not guarantees.
04MECHANICS

Cómo Usar Esta Calculadora de Forma Eficaz

1
Pick a target: a 5–10% loss already improves blood pressure, blood sugar, and cholesterol for most people.
2
Convert it to kilos or pounds — for example, 8% of 90 kg is about 7.2 kg.
3
Choose a sustainable pace of 0.25–0.9 kg (0.5–2 lb) per week, which means roughly a 250–1000 kcal daily deficit.
4
Divide the target by the weekly pace to estimate a timeline — 7.2 kg at 0.5 kg/week is about 14 weeks.
5
Track weekly and adjust; on a GLP-1, let appetite and side effects guide the pace rather than forcing a faster deficit.
05DEEP DIVE

How to read these numbers safely

The medication percentages are population averages from clinical trials at the top maintenance dose; your result can be higher or lower depending on dose, adherence, diet, activity, and physiology. Use them to set expectations, not as a promise.

Aim for steady, sustainable loss rather than the fastest possible; keep protein, fluids, and sleep adequate, and bring your weight log and medication history to your clinician instead of self-escalating the dose. This tool is for planning, not medical advice.

06FAQ

Preguntas Frecuentes

Shotlee te permite registrar cada dosis, efectos secundarios, peso corporal y más. Mantén un historial completo de tu protocolo y recibe recordatorios automáticos.

Sí. Shotlee es completamente gratuita para todas las funciones de seguimiento básico. La versión Pro ofrece funciones avanzadas de análisis.

Sí. Shotlee soporta el seguimiento de múltiples medicamentos simultáneamente, incluyendo protocolos de combinación.

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📚References & sources

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