>>Hi everybody,
>>
>>I just spent about 15 minutes googling and could not find simple formulas I need to implement for conversions of kg into pounds or stones and pounds, pounds into the other 2 and stone and pounds into the other two.
>>
>>Here is what I started to write but I can not find the formulas to use:
>>
>>

>> $scope.updateWeight = function(weight1, weight2, units)
>>            {
>>
>>                switch (units) {
>>                    case 'kg':
>>                        $scope.currentGuest.weightG = weight1 * 1000;
>>                        $scope.currentGuest.weight = Math.round(weight1 * 2.20462); // weight in pounds
>>                        $scope.currentGuest.weightStone = Math.round(weight1 * 0.15747); // weight in stones
>>                        $scope.currentGuest.weigthLbs = // remainder for stones/pounds
>>                        break;
>>                    case 'lbs':
>>                        
>>                        break;
>>
>>                    case 'stones': // stones and pounds
>>                        break;
>>                }
>>            }

>
>A metric pound is half a kg? But it's marked as deprecated for ages.

Well, this is what I came up with after looking through various sites and trying to also determine the max limit for all of these:

switch (units) {
                    case 'kg':
                        $scope.currentGuest.weightG = weight1 * 1000;
                        $scope.currentGuest.weight = Math.round(weight1 * 2.20462); // weight in pounds
                        $scope.currentGuest.weightStone = Math.round(weight1 * 0.15747); // weight in stones
                        $scope.currentGuest.weightLbs = Math.round(weight1 * 2.20462 % 14); // remainder for stones/pounds
                        break;
                    case 'lbs':
                        $scope.currentGuest.weightG = Math.round(weight1 * 453.592);
                        $scope.currentGuest.weightKg = weight1 * 0.453592;
                        $scope.currentGuest.weightStone = Math.round(weight1 / 14);
                        $scope.currentGuest.weightLbs = Math.round(weight1 % 14);
                        break;

                    case 'stones': // stones and pounds

                        $scope.currentGuest.weight = weight1 * 14 + weight2;
                        $scope.currentGuest.weightG = Math.round($scope.currentGuest.weight * 453.592);
                        $scope.currentGuest.weightKg = $scope.currentGuest.weight * 0.453592;
                        break;
                }

and on the page markup:

<div class="form-group row">
        <label class="col-md-2 control-label" title="@Labels.weight">@Labels.weight</label>
        <div class="controls" ng-show="showWeightKg">
            <div class="col-md-2 col-lg-2">
                <input type="number" class="form-control"
                       data-sm:number-format data-sm:number ng-show="showWeightKg"
                       min="0.00" max="600.00" name="weightKg" id="weightKg"
                       ng-change="changeWeightKgHappened()"
                       ng-model="currentGuest.weightKg" />
            </div>
            <label class="col-md-1" title="Kg.">Kg.</label>
            <div class="field-validation-error">
                <span ng-show="(form.editGuestGeneralForm.weightKg.$error.min || form.editGuestGeneralForm.weightKg.$error.max) && form.editGuestGeneralForm.weightKg.$dirty">
                    @String.Format(Messages.mustBeBetweenXandY, Labels.weight, 0.00, 600.00)
                </span>
            </div>
        </div>

        <div class="controls" ng-show="showWeight">
            <div class="col-md-2 col-lg-2">
                <input type="number" class="form-control"
                       data-sm:number-format data-sm:number ng-show="showWeight"
                       min="0" max="1500" name="weight" id="weight"
                       ng-model="currentGuest.weight"
                       ng-change="changeWeightHappened()" />
            </div>
            <label class="col-md-1" title="Lbs.">Lbs.</label>

            <div class="field-validation-error">
                <span ng-show="(form.editGuestGeneralForm.weight.$error.min || form.editGuestGeneralForm.weight.$error.max) && form.editGuestGeneralForm.weight.$dirty">
                    @String.Format(Messages.mustBeBetweenXandY, Labels.weight, 0, 1500)
                </span>
            </div>          
        </div>

        <div class="controls" ng-show="showWeightStone">
            <div class="col-md-2 col-lg-2">
                <input type="number" class="form-control"
                       data-sm:number-format data-sm:number ng-show="showWeightStone"
                       min="0" max="100" name="weightStone" id="weightStone"
                       ng-model="currentGuest.weightStone"
                       ng-change="changeWeightStoneHappened()" />
            </div>
            <label class="col-md-1" title="St.">St.</label>

            <div class="field-validation-error">
                <span ng-show="(form.editGuestGeneralForm.weightStone.$error.min || form.editGuestGeneralForm.weightStone.$error.max) && form.editGuestGeneralForm.weightStone.$dirty">
                    @String.Format(Messages.mustBeBetweenXandY, Labels.weight, 0, 100)
                </span>
            </div>
            <div class="col-md-2 col-lg-2">
                <input type="number" class="form-control"
                       data-sm:number-format data-sm:number ng-show="showWeightStone"
                       min="0" max="13" name="weightLbs" id="hweightLbs"
                       ng-model="currentGuest.weightLbs"
                       ng-change="changeWeightStoneHappened()" />
            </div>
            <label class="col-md-1" title="Lbs.">Lbs.</label>
            <div class="field-validation-error">
                <span ng-show="(form.editGuestGeneralForm.weightLbs.$error.min || form.editGuestGeneralForm.weightLbs.$error.max) && form.editGuestGeneralForm.weightLbs.$dirty">
                    @String.Format(Messages.mustBeBetweenXandY, Labels.weight, 0, 13)
                </span>
            </div>
        </div>

Will be testing these now.